NSTextField resigning first responder

问题

I'm trying to have my text field resign first responder when the user is done editing it, like when they hit enter. The delegate method is getting called but what I have now doesn't work, what is the proper way to go about doing this?

- (BOOL)control:(NSControl *)control textShouldEndEditing:(NSText *)fieldEditor
{
    [fieldEditor resignFirstResponder];
    return YES;
}

回答1:

From the docs on the -resignFirstResponder method:

Use the NSWindow makeFirstResponder: method, not this method, to make an object the first responder. Never invoke this method directly.

This code should do it:

[myWindow makeFirstResponder:nil];

回答2:

- (void)controlTextDidEndEditing:(NSNotification *)obj {

   [self.window makeFirstResponder:view];
}

where "view" is the parent NSView of your NSTextView control.

回答3:

I believe you are looking for the NSControl delegate method:

- (void)controlTextDidEndEditing:(NSNotification *)notif

Implement this method in your NSTextField delegate (easily set in IB).

Then your request to change the responder, such as

[self.window selectNextKeyView:self]

should work.

回答4:

I am no expert in iPhone programming yet but the method you need to implement is "textFieldShouldReturn" implemented like this:

  - (BOOL)textFieldShouldReturn:(UITextField *)theTextField {
    [theTextField resignFirstResponder];
    return YES;
}

来源：https://stackoverflow.com/questions/4431068/nstextfield-resigning-first-responder